What does it mean to be "full" after a meal?

Being "full" after a meal refers to a state in which a person no longer feels hunger. This sensation indicates that the body has received an adequate amount of food to meet its energy and nutritional needs. When the stomach expands after eating, signals are sent to the brain indicating satiety, which contributes to the feeling of fullness. This is a natural physiological response to food intake and is crucial for regulating appetite and preventing overeating.

The other options relate to different concepts that do not align with the definition of fullness after eating. For instance, needing to drink pertains to hydration rather than the feeling of fullness related to food consumption. Being a person who does not eat meat refers to dietary choices and does not correlate with the sensation of fullness. Lastly, a "cheap meal" describes the cost aspect of food rather than a physiological response after eating. Thus, the correct understanding of fullness is intrinsically tied to the absence of hunger after consuming food.